Preheat an electric griddle to 350°F, if using one. If not, you’ll preheat your pan just before cooking the pancakes.

Whisk flour, brown sugar, baking powder, salt, and cinnamon in a large bowl.

Whisk milk, egg, oil, and vanilla in a large measuring cup. Add wet ingredients to dry, add bananas, and stir until combined. Stir in chocolate chips. (1/2 cup will be very chocolatey, so add how many you want depending on how sweet you want the pancakes to be.)

Spray pan or griddle with cooking spray. Drop desired amount of pancake batter onto preheated griddle or pan. Cook until small bubbles form then flip until the bottom is a light golden brown.